From 77875939a3572358c2a496bed96f8186769e59b0 Mon Sep 17 00:00:00 2001
From: Artem Nikitin <artemnikitin@artemnikitin.com>
Date: Thu, 25 Jul 2019 16:22:25 +0200
Subject: [PATCH] Don't run E2E tests if change was in docs only (#1368)

* Update Jenkinsfile

* Update Jenkinsfile

* Update Jenkinsfile
---
 build/ci/e2e/Jenkinsfile | 34 +++++++++++++++++++++++++++-------
 1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/build/ci/e2e/Jenkinsfile b/build/ci/e2e/Jenkinsfile
index c92fc5aeea..ea4850b9cc 100644
--- a/build/ci/e2e/Jenkinsfile
+++ b/build/ci/e2e/Jenkinsfile
@@ -24,9 +24,25 @@ pipeline {
                 checkout scm
             }
         }
-        stage("Run E2E tests") {
-            steps {
-                sh 'make -C build/ci ci-e2e'
+        stage("E2E tests") {
+            when {
+                expression {
+                    notOnlyDocs()
+                }
+            }
+            stages {
+                stage('Run E2E tests') {
+                    steps {
+                        sh 'make -C build/ci ci-e2e'
+                    }
+                }
+                stage('Cleanup GKE') {
+                    steps {
+                        build job: 'cloud-on-k8s-e2e-cleanup',
+                            parameters: [string(name: 'GKE_CLUSTER', value: "${GKE_CLUSTER_NAME}")],
+                            wait: false
+                    }
+                }
             }
         }
     }
@@ -43,12 +59,16 @@ pipeline {
             }
         }
         cleanup {
-            build job: 'cloud-on-k8s-e2e-cleanup',
-                  parameters: [string(name: 'GKE_CLUSTER', value: "${GKE_CLUSTER_NAME}")],
-                  wait: false
-
             cleanWs()
         }
     }
 
 }
+
+def notOnlyDocs() {
+    // grep succeeds if there is at least one line without docs/
+    return sh (
+        script: "git diff --name-status HEAD~1 HEAD | grep -v docs/",
+    	returnStatus: true
+    ) == 0
+}